As she pull your panties down, you feel some more powers grow into you. You still can't use them, the charm blocking your access, but at least they're still there. But why are they growing?
Looking at the witch, Wydia you remember the others calling her, you saw she was becoming younger, but she didn't seem to notice. Only once she had taken said underwear off you did she notice how much she was changing, mainly thanks to the intense pain growing a penis and balls caused.
Your tormentor wasn't a sexy witch anymore, but a young boy in drag. In fact, you're pretty sure the goddess of chaos decided to punish Wydia by turning ‘her’ the same age that you used to be. After all the goddess has chosen you to wear her gift, who was that upstart to take it away from you, to try to make it her own?
Feeling reassured since Wydia's actions didn't make you change back, you look at her smugly "It seems the goddess didn't like you meddling in her affairs. She was the one who make sure I got those clothes, to grant me my powers, you know. So if I was you I would hurry to free me, and pray the goddess pardon me my choices and accept to grant me magic once more."
What you didn't realize since the talisman also cut your connection to the goddess of chaos, is that said goddess nudged the other witch into reentering the room just when you started to speak, knowing how chaotic things would be once they knew that strange young boy was their former leader. (And as a bonus, it would prevent anyone from discussing your legitimacy.)